A Statistics Professor Wishes to Estimate the Average Mark on a Term

question 26

Multiple Choice

A statistics professor wishes to estimate the average mark on a term test for a course that has
Multiple sections and many students. A survey of some of the students registered for the course
Reveals the following results:
The student from the course wonders whether the population mean could have been 60 or 80.

• A) Since 80 is within the 95% confidence interval, the population mean is likely to be 80.
• B) Since 80 is not within the 95% confidence interval, the population mean is not likely to be 80.
• C) Since 60 is within the 95% confidence interval, the population mean is likely to be 60.
• D) Since neither 60 nor 80 is within the 95% confidence interval, the population mean is not likely to be 60 or 80.

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Definitions:

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate, blood pressure, and blood sugar levels.

Anorexia Nervosa

A serious eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to self-imposed starvation and excessive weight loss.

Hypothalamus

Component of the brain that regulates eating, drinking, sex, and basic emotions; abnormal behaviors involving any of these activities may be the result of dysfunction in the hypothalamus.

Body Mass Index (BMI)

A measurement of body fat based on height and weight that applies to adult men and women.